<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <!-- <style>
        div{color: green;}
        div{color: red;}
    </style> -->

    <style>
        /* #div1{color: blue;}
        .div2{color: green;}
        div{color: yellow;}
        *{color: orange;}
        body{color: palevioletred;} */

    </style>


</head>
<body>
    
    <!-- <div>这是发</div> -->
    <!-- <div style="color: red;" id="div1">哈哈哈</div> -->
    <!-- <div id="div1" class="div2">哈哈哈</div> -->
    <!-- <div class="div2">哈哈哈</div> -->
    <!-- <div>哈哈哈</div> -->


    

</body>
</html>